As a bystander, it's hard to know when to intervene and when to stay silent during a troubling situation. Such was the case when a mother started berating one of daughters for her weight while waiting in line for donuts.

The mother made it clear that her skinny daughter could enjoy a sugary donut, but the heavier child wasn't allowed to munch on the tasty treat. Thankfully, there were kind people willing to step in and stand up for the girl...

The people in line watched as the mother poked fun at her daughter for her weight and chuckled with a stranger about the fact that her daughter has her own special "donut" - a ring of fat around her belly.

Sensing the girl's discomfort, the man immediately said that he has a "donut" of his own and that she should be able to eat what her sister eats. Treating them differently isn't fair!

He wasn't the only person who realized the mother's cruel words were going too far. Another man standing behind them popped in and told the mother that he was disgusted by the way she talked to her daughter.

Just before the man really went off, John Quinones ran into the shop and told him the entire thing was all part of a hoax to see whether or not strangers would get involved. As a father of a young girl himself, the man was visibly shaken by the way the actress treated the girl.